Blinding Azir's soldiers with Teemo/Quinn
Do you think it was intended for Azir's soldiers to be unaffected if Azir himself is blinded?
Blinds are intended to make the victim miss their AA. Azir's soldiers override his regular AA, but it's still considered Azir's AA. Ergo, a blinded Azir would miss the AA, because that's what blinds are for.
It's not like the soldiers are their own entity, like Yorick's ghouls or Mordekaiser's ult, who you can individually blind.